Home / 30,281.11-45,421.90-10,559.69

Finding the Fourth Proportional to 30,281.11, 45,421.90 and 10,559.69

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Solution

The fourth proportional to 30,281.11, 45,421.90 and 10,559.69 is: 15,839.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,281.11 : 45,421.90 = 10,559.69 : x
  2. Step 2: Convert to fraction form
    30,281.11/45,421.90 = 10,559.69/x
  3. Step 3: Cross multiply
    30,281.11x = 45,421.90 × 10,559.69
  4. Step 4: Simplify right side
    30,281.11x = 479,641,100.03
  5. Step 5: Solve for x
    x = 479,641,100.03/30,281.11
  6. Step 6: Final answer
    x = 15,839.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.